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SITRANS LR100 series are 80 GHz compact radar transmitters with Bluetooth wireless technology. Featuring a narrow beam for flexible installations in existing vessel openings – or non-intrusively through plastic vessels.

The series consists of three transmitters:
  • SITRANS LR100 for basic measurement to 8m
  • SITRANS LR110 with communication and hazardous approvals options and range to 15m
  • SITRANS LR120 with communication, longest range to 30m and optional submergence shield for flooding protection.
  • Benefits
  • Easy Bluetooth® wireless technology for easy and quick setup with Siemens SITRANS mobile IQ App
  • 80 GHz narrow beam and small size allows for the easiest installation and commissioning
  • Custom radar microchip means signal killer conditions like condensation, buildup or fluffy solids are no match for the extreme sensitivity of the microchip, the weakest signals are still detected
  • Zero blanking zone allows measurement range right up to the sensor and with an accuracy of 2 mm you can get rid of costly manual measurement methods
  • Digitalization and Industry 4.0 ready with HART 7.0 or optional Modbus RTU for intelligent, value adding data locally or to the cloud
  • SITRANS LR100, LR110, LR120 Continuous Level Measurement Specifications

    Measuring principle 78-82 GHz, FMCW
    Measuring range 8 m (26 ft)
    Process connections Thread 1½" and 1"
    Process pressure -1 to 3 bar
    Process temperature -40 to 60 °C (-40 to 140 °F)
    Accuracy 5 mm (0.2 inch)
    Beam Angle
    mA/Loop, Communications 2-wire, 4 to 20 mA
    Ex approvals no
    Typical Applications Chemical storage vessels, bulk solids hoppers, produced water, and drilling mud
    Measuring principle 78-82 GHz, FMCW
    Measuring range 15 m (49 ft)
    Process connections Thread 1½" and 1"
    Process pressure -1 to 3 bar
    Process temperature -40 to 80 °C (-40 to 176 °F)
    Accuracy 2 mm (0.08 inch)
    Beam Angle
    mA/Loop, Communications 2-wire, 4 to 20 mA/HART or 4-wire, Modbus
    Ex approvals Gas and dust
    Typical Applications Chemical storage vessels, bulk solids hoppers, produced water, and drilling mud
    Measuring principle 78-82 GHz, FMCW
    Measuring range 30 m (98 ft)
    Process connections Thread 1" NPT or BSPT
    Process pressure -1 to 3 bar
    Process temperature -40 to 80 °C (-40 to 176 °F)
    Accuracy 2 mm (0.08 inch)
    Beam Angle
    mA/Loop, Communications 2-wire, 4 to 20 mA/HART or 4-wire, Modbus
    Ex approvals Gas and dust
    Typical Applications Chemical storage vessels, bulk solids hoppers, produced water, and drilling mud